Vulnerability-Lookup

FKIE_CVE-2024-27005

Vulnerability from fkie_nvd - Published: 2024-05-01 06:15 - Updated: 2026-08-04 11:17

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: interconnect: Don't access req_list while it's being manipulated The icc_lock mutex was split into separate icc_lock and icc_bw_lock mutexes in [1] to avoid lockdep splats. However, this didn't adequately protect access to icc_node::req_list. The icc_set_bw() function will eventually iterate over req_list while only holding icc_bw_lock, but req_list can be modified while only holding icc_lock. This causes races between icc_set_bw(), of_icc_get(), and icc_put(). Example A: CPU0 CPU1 ---- ---- icc_set_bw(path_a) mutex_lock(&icc_bw_lock); icc_put(path_b) mutex_lock(&icc_lock); aggregate_requests() hlist_for_each_entry(r, ... hlist_del(... <r = invalid pointer> Example B: CPU0 CPU1 ---- ---- icc_set_bw(path_a) mutex_lock(&icc_bw_lock); path_b = of_icc_get() of_icc_get_by_index() mutex_lock(&icc_lock); path_find() path_init() aggregate_requests() hlist_for_each_entry(r, ... hlist_add_head(... <r = invalid pointer> Fix this by ensuring icc_bw_lock is always held before manipulating icc_node::req_list. The additional places icc_bw_lock is held don't perform any memory allocations, so we should still be safe from the original lockdep splats that motivated the separate locks. [1] commit af42269c3523 ("interconnect: Fix locking for runpm vs reclaim")

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/19ec82b3cad1abef2a929262b8c1528f4e0c192d
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fe549d8e976300d0dd75bd904eb216bed8b145e0
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.9
linux	linux_kernel	6.9
linux	linux_kernel	6.9
linux	linux_kernel	6.9

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/interconnect/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "9be2957f014d91088db1eb5dd09d9a03d7184dce",
              "versionType": "git"
            },
            {
              "lessThan": "19ec82b3cad1abef2a929262b8c1528f4e0c192d",
              "status": "affected",
              "version": "ee42bfc791aa3cd78e29046f26a09d189beb3efb",
              "versionType": "git"
            },
            {
              "lessThan": "d0d04efa2e367921654b5106cc5c05e3757c2b42",
              "status": "affected",
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              "versionType": "git"
            },
            {
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              "version": "2f3a124696d43de3c837f87a9f767c56ee86cf2a",
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            },
            {
              "lessThan": "5.15.151",
              "status": "affected",
              "version": "5.15.133",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.81",
              "status": "affected",
              "version": "6.1.55",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6",
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          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.15.151",
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            },
            {
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              "status": "unaffected",
              "version": "6.1.81",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.29",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ninterconnect: Don\u0027t access req_list while it\u0027s being manipulated\n\nThe icc_lock mutex was split into separate icc_lock and icc_bw_lock\nmutexes in [1] to avoid lockdep splats. However, this didn\u0027t adequately\nprotect access to icc_node::req_list.\n\nThe icc_set_bw() function will eventually iterate over req_list while\nonly holding icc_bw_lock, but req_list can be modified while only\nholding icc_lock. This causes races between icc_set_bw(), of_icc_get(),\nand icc_put().\n\nExample A:\n\n  CPU0                               CPU1\n  ----                               ----\n  icc_set_bw(path_a)\n    mutex_lock(\u0026icc_bw_lock);\n                                     icc_put(path_b)\n                                       mutex_lock(\u0026icc_lock);\n    aggregate_requests()\n      hlist_for_each_entry(r, ...\n                                       hlist_del(...\n        \u003cr = invalid pointer\u003e\n\nExample B:\n\n  CPU0                               CPU1\n  ----                               ----\n  icc_set_bw(path_a)\n    mutex_lock(\u0026icc_bw_lock);\n                                     path_b = of_icc_get()\n                                       of_icc_get_by_index()\n                                         mutex_lock(\u0026icc_lock);\n                                         path_find()\n                                           path_init()\n    aggregate_requests()\n      hlist_for_each_entry(r, ...\n                                             hlist_add_head(...\n        \u003cr = invalid pointer\u003e\n\nFix this by ensuring icc_bw_lock is always held before manipulating\nicc_node::req_list. The additional places icc_bw_lock is held don\u0027t\nperform any memory allocations, so we should still be safe from the\noriginal lockdep splats that motivated the separate locks.\n\n[1] commit af42269c3523 (\"interconnect: Fix locking for runpm vs reclaim\")"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: interconexi\u00f3n: no acceder a req_list mientras se est\u00e1 manipulando. El mutex icc_lock se dividi\u00f3 en mutex icc_lock e icc_bw_lock separados en [1] para evitar s\u00edmbolos de bloqueo. Sin embargo, esto no protegi\u00f3 adecuadamente el acceso a icc_node::req_list. La funci\u00f3n icc_set_bw() eventualmente iterar\u00e1 sobre req_list mientras solo mantiene icc_bw_lock, pero req_list se puede modificar mientras solo mantiene icc_lock. Esto provoca ejecuci\u00f3ns entre icc_set_bw(), of_icc_get() e icc_put(). Ejemplo A: CPU0 CPU1 ---- ---- icc_set_bw(path_a) mutex_lock(\u0026amp;icc_bw_lock); icc_put(ruta_b) mutex_lock(\u0026amp;icc_lock); agregado_requests() hlist_for_each_entry(r, ... hlist_del(...  Ejemplo B: CPU0 CPU1 ---- ---- icc_set_bw(path_a) mutex_lock(\u0026amp;icc_bw_lock); path_b = of_icc_get() of_icc_get_by_index( ) mutex_lock(\u0026amp;icc_lock); path_find() path_init() agregado_requests() hlist_for_each_entry(r, ... hlist_add_head(...  Solucione este problema asegur\u00e1ndose de que icc_bw_lock siempre se mantenga antes de manipular icc_node::req_list. El adicional Los lugares donde se mantiene icc_bw_lock no realizan ninguna asignaci\u00f3n de memoria, por lo que a\u00fan deber\u00edamos estar a salvo de los s\u00edmbolos de bloqueo originales que motivaron los bloqueos separados [1] commit af42269c3523 (\"interconexi\u00f3n: arreglar el bloqueo para runpm vs reclaim\")"
    }
  ],
  "id": "CVE-2024-27005",
  "lastModified": "2026-08-04T11:17:32.480",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-27005",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-06T18:46:13.449387Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-01T06:15:18.883",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/19ec82b3cad1abef2a929262b8c1528f4e0c192d"
    },
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      "tags": [
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    },
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    },
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    },
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      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        },
        {
          "lang": "en",
          "value": "CWE-667"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-27005 (GCVE-0-2024-27005)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:28 – Updated: 2026-08-05 11:28

Title

interconnect: Don't access req_list while it's being manipulated

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-06 18:46 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/fe549d8e976300d0d…
https://git.kernel.org/stable/c/19ec82b3cad1abef2…
https://git.kernel.org/stable/c/d0d04efa2e3679216…
https://git.kernel.org/stable/c/4c65507121ea8e0b4…
https://git.kernel.org/stable/c/de1bf25b6d771abdb…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9be2957f014d91088db1eb5dd09d9a03d7184dce , < fe549d8e976300d0dd75bd904eb216bed8b145e0 (git) Affected: ee42bfc791aa3cd78e29046f26a09d189beb3efb , < 19ec82b3cad1abef2a929262b8c1528f4e0c192d (git) Affected: af42269c3523492d71ebbe11fefae2653e9cdc78 , < d0d04efa2e367921654b5106cc5c05e3757c2b42 (git) Affected: af42269c3523492d71ebbe11fefae2653e9cdc78 , < 4c65507121ea8e0b47fae6d2049c8688390d46b6 (git) Affected: af42269c3523492d71ebbe11fefae2653e9cdc78 , < de1bf25b6d771abdb52d43546cf57ad775fb68a1 (git) Affected: 2f3a124696d43de3c837f87a9f767c56ee86cf2a (git) Affected: 5.15.133 , < 5.15.151 (semver) Affected: 6.1.55 , < 6.1.81 (semver) Affected: 6.5.5 , < 6.6 (semver)
Linux	Linux	Affected: 6.6 Unaffected: 0 , < 6.6 (semver) Unaffected: 5.15.151 , ≤ 5.15.* (semver) Unaffected: 6.1.81 , ≤ 6.1.* (semver) Unaffected: 6.6.29 , ≤ 6.6.* (semver) Unaffected: 6.8.8 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-27005",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-06T18:46:13.449387Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-05T15:17:57.462Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T17:16:33.949Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/interconnect/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fe549d8e976300d0dd75bd904eb216bed8b145e0",
              "status": "affected",
              "version": "9be2957f014d91088db1eb5dd09d9a03d7184dce",
              "versionType": "git"
            },
            {
              "lessThan": "19ec82b3cad1abef2a929262b8c1528f4e0c192d",
              "status": "affected",
              "version": "ee42bfc791aa3cd78e29046f26a09d189beb3efb",
              "versionType": "git"
            },
            {
              "lessThan": "d0d04efa2e367921654b5106cc5c05e3757c2b42",
              "status": "affected",
              "version": "af42269c3523492d71ebbe11fefae2653e9cdc78",
              "versionType": "git"
            },
            {
              "lessThan": "4c65507121ea8e0b47fae6d2049c8688390d46b6",
              "status": "affected",
              "version": "af42269c3523492d71ebbe11fefae2653e9cdc78",
              "versionType": "git"
            },
            {
              "lessThan": "de1bf25b6d771abdb52d43546cf57ad775fb68a1",
              "status": "affected",
              "version": "af42269c3523492d71ebbe11fefae2653e9cdc78",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2f3a124696d43de3c837f87a9f767c56ee86cf2a",
              "versionType": "git"
            },
            {
              "lessThan": "5.15.151",
              "status": "affected",
              "version": "5.15.133",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.81",
              "status": "affected",
              "version": "6.1.55",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6",
              "status": "affected",
              "version": "6.5.5",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/interconnect/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.151",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.81",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.29",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.151",
                  "versionStartIncluding": "5.15.133",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.81",
                  "versionStartIncluding": "6.1.55",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.29",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.8",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.5.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ninterconnect: Don\u0027t access req_list while it\u0027s being manipulated\n\nThe icc_lock mutex was split into separate icc_lock and icc_bw_lock\nmutexes in [1] to avoid lockdep splats. However, this didn\u0027t adequately\nprotect access to icc_node::req_list.\n\nThe icc_set_bw() function will eventually iterate over req_list while\nonly holding icc_bw_lock, but req_list can be modified while only\nholding icc_lock. This causes races between icc_set_bw(), of_icc_get(),\nand icc_put().\n\nExample A:\n\n  CPU0                               CPU1\n  ----                               ----\n  icc_set_bw(path_a)\n    mutex_lock(\u0026icc_bw_lock);\n                                     icc_put(path_b)\n                                       mutex_lock(\u0026icc_lock);\n    aggregate_requests()\n      hlist_for_each_entry(r, ...\n                                       hlist_del(...\n        \u003cr = invalid pointer\u003e\n\nExample B:\n\n  CPU0                               CPU1\n  ----                               ----\n  icc_set_bw(path_a)\n    mutex_lock(\u0026icc_bw_lock);\n                                     path_b = of_icc_get()\n                                       of_icc_get_by_index()\n                                         mutex_lock(\u0026icc_lock);\n                                         path_find()\n                                           path_init()\n    aggregate_requests()\n      hlist_for_each_entry(r, ...\n                                             hlist_add_head(...\n        \u003cr = invalid pointer\u003e\n\nFix this by ensuring icc_bw_lock is always held before manipulating\nicc_node::req_list. The additional places icc_bw_lock is held don\u0027t\nperform any memory allocations, so we should still be safe from the\noriginal lockdep splats that motivated the separate locks.\n\n[1] commit af42269c3523 (\"interconnect: Fix locking for runpm vs reclaim\")"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The interconnect framework is reached only through local syscall paths \u2014 V4L2 ioctls on /dev/videoN (venus), DRM render-node submissions driving GPU devfreq, block I/O driving UFS/eMMC clock scaling \u2014 all of which require local access to the device. No network-facing protocol handler reaches `icc_set_bw()` or `icc_put()`.\nAC:L - The attacker directly controls the reading side of the race and can spin it in a tight loop (repeated `VIDIOC_STREAMON`/`STREAMOFF` on /dev/videoN, or continuous GPU/IO load forcing OPP bandwidth transitions), so the `req_list` walk in `aggregate_requests()` can be issued arbitrarily often against recurring `path_init()`/`icc_put()` mutations, with unlimited retries and no condition outside the attacker\u0027s influence gating success.\nPR:L - An ordinary unprivileged local account suffices \u2014 access to /dev/videoN (video/media group, or any app on Android), /dev/dri/renderD128, or simply generating filesystem I/O is enough to drive `icc_set_bw()` into `aggregate_requests()`. No capability, root, or namespace privilege is required.\nUI:N - The attacker\u0027s own process triggers both the bandwidth-vote storm and the racing condition entirely on its own. No victim action, no file to open, no filesystem to mount.\nS:U - The corruption is confined to kernel heap objects and interconnect provider state within the same kernel security authority. There is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The list walk continues through a `kfree()`d `struct icc_path` from a general-purpose kmalloc cache, so a sprayed `req_node.next` steers subsequent iterations to arbitrary kernel addresses, reading `enabled`/`tag`/`avg_bw`/`peak_bw` from them; those values surface in `node-\u003eavg_bw`/`peak_bw`, giving a use-after-free based arbitrary-read primitive.\nI:H - This is a use-after-free plus hlist corruption on a `GFP_KERNEL` kmalloc object, which is a standard heap-spray and write-primitive foundation; concretely, garbage read from freed memory is aggregated into `node-\u003eavg_bw`/`peak_bw` and programmed into interconnect hardware through `apply_constraints()` \u2192 `p-\u003eset()`, corrupting system bus configuration.\nA:H - `icc_put()` uses `hlist_del()` (leaving `LIST_POISON1` in `next`) immediately followed by `kfree(path)`, so a racing `hlist_for_each_entry()` dereferences a poison or dangling pointer and oopses/panics the kernel; `hlist_add_head()` racing the same walk can likewise send it into a corrupted chain."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:28:55.925Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fe549d8e976300d0dd75bd904eb216bed8b145e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/19ec82b3cad1abef2a929262b8c1528f4e0c192d"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42"
        },
        {
          "url": "https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6"
        },
        {
          "url": "https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1"
        }
      ],
      "title": "interconnect: Don\u0027t access req_list while it\u0027s being manipulated",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-27005",
    "datePublished": "2024-05-01T05:28:59.193Z",
    "dateReserved": "2024-02-19T14:20:24.207Z",
    "dateUpdated": "2026-08-05T11:28:55.925Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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FKIE_CVE-2024-27005

CVE-2024-27005 (GCVE-0-2024-27005)

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Sightings

Nomenclature

Related by attack behaviour